Submarine boat.



C. REGENBOGEN -& H. VOGEL.

SUBMARSNE BOAT.

APPLICATION FILED APR. is, 1915.

llfi g lm Pmen'ted 14, 1915.

ya/MW mw W UNITED sraa ns satires-r onrio eoNnAn'nnGENBoGENQorxrnneeannnn, an]: HANS vo tsn or KIEL, GERMANY, AssIGNons'ro FRIED.KBUPP axrrsnensnnnscnarr ennmanmwnnsr, QEVKIEL- GAARDEN, GERMANY.

sutsraenmn EGA'l.

Specification of Letters Patent.

Patented Dec, fret,

Application filed 59, ril 16, 1915. Serial No. 21,8 I

To all whom it may concern 1 Be it known that we, QOXRAI) REGEN- Bo ENand H'ANS VoGnL, citizens of the German Empire, residing atKiel-Gaarden, Germany, and Kiel, Germany, have invented certain new anduseful Improvements in Submarine Boats, of which'the following is 1 aspecification. A

The present invention relates to submarine boats Which are driven by asteam engine during surface travel, but by an electric motor when underwater, and itresides primarily therein that the blasting plant iorgenerating the Combustion pressure air for the boiler combustion isarranged outs1de of the pressure proof body of the boat.

"In the accompanying drawing, one ear bodiment of the invention has beenillustrated, and the figure shows a vertical longitudinal sectionthrough the boiler chamber, as Well as portions-of the adjacent chambersof a submarineboat of the above described kind.

1A; represents the pressure proof body of '25 .structed as asuperstructure which can be the" submarine boat and B a platformconflodd hen the boat dives down. 'fiWith the boat is formed a boilerroom (3' the bulk heads a a, and this room is reached by means of bulkhead doors, not shown. In the, room C a Water tube boiler D, preferablyan oil burning boiler, is inserted which generates the necessarysteamfor driving a steam engine, not shown. This boileris connected with'asmoke stack E which penetrates through the pressure prooi body A of thesubmarine boat, and the external portion thereof reaching above theplatform is constructed to be laid down as represented by dot and dashlines during submarine travel. The opening of the Y, smoke stack may beclosed watertight "through a lid N, by means of a hand wheel n fromthe.1nom P steam'turbine G. The suction pipe H of the adjacent to theboiler room.

In the superstructure B, that is, outside or the pressureproof body A ofthe boat, is

now, in accordance with the present invention, the blasting plantinserted this plant consisting of-a ventilator F and a drivingventilator F opens outwardly, while-the 1 pressure pipe"-K penetratesthrough the pressure proof body A id the boiler room G and s;

of the hoat 'outside re 11 Through the assistance of a hand wheel 3, thepressure pipe K mavlbe closed water tight from the"; om R through aclosing valve L. starting and stopping "ofthe driving tur through thebulk head a into the boiler .From the same roo'inzthe.

bine G for the ventilator F may also be opother in a suitable mannerthrough a pas- 1 sage, ago-"inst the boiler room.

During surface travel, the parts have the position shown by full linesin the figure, that is the smoke stack E stands erect. the valve L isopen and the steam valve N set for running. marine boat then takes placethrough the steam engine fed from the boiler'D the blasting F G being inoperation; If the boat is going to dive down, the boiler fire is put outand the ventilator F stopped through the closing of the steam valve M.Thereupon the valve L is closed tightly by turning the hand wheel P, thesmoke stack E is laid down and the smoke stack lid N closed by means ofthe hand wheel n The driving of the boat now takes place in awell knownmanner through an electric n1otor, not shown, fed from an accumulatorbattery. 1 fit-er the rising of the boat, "-a teniperature will exist inthe boiler room. (1, in accordance with experience, when the boat hasbeen under water for a great length of time, which does not permit ofentering the room without danger. By means of the described device it isnow possible to open the lid N, to raise the smoke stack E, to unscrewthe valve L and start the blasting plant F G from the adjacent rooms 1and B. After a-short time the room C will besuflicientlycool so that itmay be entered and the steam boiler againstarted for surface travel.

The arrangement of the blasting plant' outside of the pressure proofbody of the not shown. which may be closed submarine boat provides aconsiderable ad vantage in that th'is'body of the boat is thiscase'not'penetrated by the large sucbut only by the small pressure the vventilator F. The pressure The propulsion of the subroe proof body ofthe boat will therefore be less weakened and the closingvalve L receivesa smaller diameter which is very essential for a tight closing. Stillanother advantage is attained by passing the pressure pipe K through thepressure proof body A of the boat outside of the boiler room C, as atthis place a complete tightening of the joint is possible at the pointof penetration, because the portion of the body of the boat situatedoutside the boiler room will show a more uniform temperature than theportion thereof situated Within the boiler room C which is exposed toconsiderable heat expansion and contraction in consequence of thedifferent temperatures that occur therein, so that the tightening of thejoints at the place of penetration is made very diflicult.

We claim 1. In a submarine boat provided with a steam engine, a blastingplant for generating the combustion pressure air for the boiler, saidblasting plant being situated Igutside of the pressure proof body of theoat.

2. In a submarine boat provided with a [steam engine, and a pressureproof body, a blasting plant outside of said pressure proof body, aplurality of bulk heads with- -in said body forming a water tight steamboiler room and separate operating rooms, a pressure pipe for theblasting plant through said pressure proof body into one of saidoperating rooms and from there through one of said bulk heads into saidboiler rooml 3. In a submarine boat provided with a steam engine, and apressure proof body, a blasting plant outside of said oresi' ire proofbody, a plurality of bulk heals w thin said body forming a water tightates. boiler room and separate operating res-ms a pressure pipe for theblasting plant leading through said pressure proof body into one of saidoperating rooms and from there through one of said bulk heads into saidboiler room, said boiler having a. smoke stack penetrating through said"pressure proof body, and means for closing said smoke stack, said meansbeing actuated from within one of said operating rooms.

4L In a submarine boat provided with a steam engine, and a pressureproof body, a blasting plantou'tsideof said pressure proof body, aplurality of bulk heads Within said body forming a watertight steamboiler room and separate operating rooms, a pressure pipe for theblasting plant leading through said pressure proof body into one of saidoperating rooms andfrom there through one of said bulk heads into saidboiler room, and means for closing said pressure pipe, said meansbeing'actuate'd from one of said operating rooms.

In testimony whereof the foregoing specification is signed in thepresence of. two witnesses.

CONRAD REGENBOGEN. HANS VOGEL.

IVitnesses JULIUS Horn, IVILHELM Knu'ryrnro'r.

